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Property and Equipment, net (Details 2) (USD $)	3 Months Ended	0 Months Ended
Property and Equipment, net (Details 2) (USD $)	Apr. 30, 2014 Tier II helicopter demonstration assets and exclusive license agreement	Apr. 30, 2014 Tier II helicopter demonstration assets and exclusive license agreement SG&A	Apr. 30, 2014 Tier II helicopter demonstration assets SG&A	Apr. 30, 2014 Tier II helicopter exclusive distribution license agreement SG&A
Assets held and used
Impairment charge	$ 3,300,000	$ 3,317,000	$ 2,645,000	$ 672,000

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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